Technical papers

Predicting SC Acoustic Tests Using the Boundary Element Method

This paper focuses on how to effectively predict random acceleration spectra experienced during spacecraft (S/C) acoustic qualification tests representing the acoustic environment at launch by using a fully coupled…

Design of acoustic insulation in ships based on predictive vibro acoustic models

The marine industry has used empirical models to predict transfer functions between source locations and noise sensitive cabins extensively in the past. These empirical methods work well for standard construction types…

Predicting the acoustics of rattle

Buzz, Squeak and Rattle (BSR) are acoustically perceived quality attributes that consistently rank among the top "things gone wrong" in initial quality surveys for many new products. BSR issues discovered late in the…

Windnoise : Coupling wind tunnel test data or cfd simulation to full vehicle vibro acoustic model

Wind noise has become in recent years a significant contributor to perceived sound inside automobiles. Many methods are nowadays available to couple wind tunnel or CFD (Computational Fluid Dynamics) data to a full…

Study on mechanical characteristics of lithium-polymer pouch cell battery for electric vehicle

In order to characterize deformation and failure behaviors of Lithium-Polymer pouch cell battery and its components, various mechanical tests were performed. Uniaxial tensile properties of electrodes, separator, and…

Welding characteristics and modeling of lithium-polymer battery for electric vehicle

The fatigue life is a major issue of weld joints due to a severe thermal exposure during the welding process. Welded joints experience highly localized heating and cooling from welding processes. As a result, the…